Table 2.
Survival of Pseudomonas sp. strain UW4, mutants, and overexpressing strain derivatives.
| UW4 derivative strains | Survival without saline stress (0 M NaCl) | Survival on saline stress (0.2 M NaCl) | Survival on saline stress (0.8 M NaCl) |
|---|---|---|---|
| Wild-type | 2.2 × 108 ( ± 0.23 × 108) a | 1.2 × 108 ( ± 0.16 × 108) a | 2.8 × 106 ( ± 0.39 × 106) b |
| acdS- | 1.1 × 108 ( ± 0.18 × 108) a | 0.8 × 108 ( ± 0.68 × 108) a | 4.5 × 104 ( ± 0.24 × 104) c |
| treS- | 0.9 × 107 ( ± 0.77 × 107) b | 0.5 × 107 ( ± 0.22 × 107) b | 1.8 × 103 ( ± 0.54 × 103) c |
| acdS-/treS- | 0.2 × 107 ( ± 0.48 × 107) b | 0.1 × 107 ( ± 0.21 × 107) b | 3.8 × 102 ( ± 0.39 × 102) d |
| OxtreS | 3.2 × 108 ( ± 0.13 × 108) a | 1.0 × 108 ( ± 0.13 × 108) a | 2.1 × 107 ( ± 0.23 × 107) b |
Survival was measured after 48 h of growth in minimal media as colony forming units per ml; pre-inoculum of each strain contained 1.0 × 106 ( ± 0.01 × 106) of CFU ml-1. The standard deviation is shown in parentheses (±). Different letters indicate significant differences at α = 0.05.